Revolving cylinder for furnaces



(No Model.)

s. G. SAOKETT. REVOLVING GYLINDER-FORNFURNAGESF Patented Fen-19, 1884.

* mam s/ES I UNITED STATES PATENT OFFICE.

" sHEEMAN GARDNERSAOKETT, OF DENVER, COLORADO.

REVOLVING CYLINDER FOR FURNACES.

SPECIFICATION forming part of :Letters Patent No. 293,676, dated February 1-9, 1884.

I Application filed November 28, 1883. (No model.)

To aZZ whom it may concern:

Be it known that I, SHERMAN G. SAOKETT, of Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Revolving Cylinders Used in Blast and Smelting Furnaces; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in revolving cylinders for furnaces; and it consists in the combination of a shell, whichis 'rigidly'secured to that end of the revolving cylinder which projects into the furnace, or where the heat impinges upon the cylinder, and which shell is open at its rear end with a perforated water-pipe which surrounds the .cylinder, and from which pipe jets of water are thrown into the shelhas will be more fully described hereinafter.

The object of my invention is to spray water into the jacket which surrounds the end of the cylinder, and by keeping this end of the cylinder cool, prevent the expansion and contraction of the cylinder from displacing the fire-brickwith which the cylinder is lined, as well as prevent the end of the cylinder from being rapidly destroyed by the heat.

Figure l is a side elevation of a device embodying my invention, partly in section. Fig. 2 is perspective of the same. V

A represents a revolving cylinder such as is used in furnaces, and which consists of an Outer casing of iron or steel and a lining of fire-brick, in the usual manner. Rigidly secured to that end of the cylinder which pro- 40 jects intothe furnace is the shell B, which preferably has the flange 0 formed upon its inner end, and which is made cone-shaped, so

7 as to project outwardly from the sides of the cylinder, as shown. This rear end of the shell is left entirely open, so that there will be no explosion from the confinement of the steam' which is generated. Passed around this revolving cylinder A is a stationary water-pipe,

G, from which are forced a number of fine streams of water, which strike inside of the shell, and prevent both the shell and the end of the cylinder from becoming so very hot. These jets of water, striking inside of the shell open end of the shell, and hence there is never any danger of explosions by confinement of the steam. Where water is thus thrown upon the cylinder, the cylinder is prevented from becoming heated to such an extent that the expansion and contraction of the iron loosens the fire-brick in such a manner as to entirely destroy the usefulness of the cylinder, and at the same time the end of the cylinder is prevented from being destroyed rapidly by the heat.

I am aware that tuyeres have been made hollow and kept filled with water, and that water-pipeshavebeen embeddedin the tuyeres, and this I disclaim. Inboth of these the wa ter has been kept confined in a solid body, and the rapid generation of the heat always causes more or less liability of explosion. My invention differs from these tuyeres in having the water injected in the form of spray into an open space, from which the steam .which is generated quickly escapes.

I am aware that tuyeres have had an outer shell or case formed as a part of them, which shells are of the same length as the blastpipe and greatly increase the size of the tuyere, and this I disclaim. My invention differs from this in a separate flanged collar or ring, which is secured to the end of the cylinder, as shown.

Having thus described my invention, 'I claim- The combination of a revolving cylinder, A,

secured thereto, and the water-pipe Gr,v the parts being arranged to operate substantially as shown.

In testimony whereof I affix my signature in presence of two witnesses.

. SHERMAN GARDNER SACKETT.

Witnesses:

EZRA FAIROHILD, H. P. PARMELEE.

in the form of spray, are at once convertedinto steam, and this steam escapes from the with a short flanged ring or collar which is 

